JP3814191B2 - Fiber optic connector adapter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an adapter for an optical fiber connector, and more particularly to an adapter for fixing two pairs of individual optical fiber connectors.
[0002]
[Prior art]
In the conventional optical fiber connector adapter, (a), as shown in FIG. 10, a pair (two) of individual optical fiber connectors are fitted, and joints a and b to the receptacle are at one end, As shown in FIGS. 11 and 12, the knob e which is an insertion side of the optical fiber connector plugs c and d is provided at the other end, and the joints a and b and the knob e are integrally formed. As described above, the I-shaped body portion f has a pair of opposing legs g, g, h, h, and the protrusions j, j projecting on the upper and lower surfaces of the pair of optical fiber connectors i, i A pair of optical fiber connectors i, i are inserted between the legs g, g and h, h by being movably inserted into holes k, k, k, k penetrating the legs g, g, h, h. A spring that is disposed between and biases the pair of optical fiber connectors i and i in the left-right direction and forward. The l and leaf spring m is known to become in each mounting.
[0003]
[Problems to be solved by the invention]
However, since the adapters (a) and (b) described above are integrally fixed to the receptacle, the adapter (a) described above can cope with this misalignment when there is a misalignment between the joint and the receptacle hole. There is a problem that forced bonding is forced, the reliability and stability of the bonding are lacking, and only receptacles that are free from bonding deviation can be applied.
[0004]
On the other hand, the adapter (b) described above can move the pair of optical fiber connectors i and i as indicated by the two-dot chain line in FIGS. Since it moves to the state, not only the range of use is limited, but also at the time of connection, there is a problem in that the joining and fixing state is poor and the joining reliability and stability are lacking.
[0005]
【the purpose】
The present invention has been made in view of the above-described problems of the prior art described above, and is divided into two so that two individual optical fiber connectors are fitted to each other to form two housings. In addition, two pairs of two knobs are fitted to the opposing portions of the two housings so as to be laterally movable, and the two knobs are configured to engage with each other so as to move up and down. The connector can be moved up and down and left and right in a parallel state, and the range of movement in the vertical direction is particularly large, so it can cope with a large misalignment between the receptacle and the pair of optical fiber connectors, forcing a forced joint. It is another object of the present invention to provide an adapter for an optical fiber connector that can improve the reliability and stability of joining and can be easily assembled.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, in claim 1, a pair of two housings divided into left and right to fit two individual optical fiber connectors is formed, and the optical plug insertion portion side of each housing is formed. A pair of two knobs formed by forming opposing portions in each opening and opening the side opposite to each opening is provided with a fitting means for moving in a direction perpendicular to the longitudinal direction of each housing. The both optical fiber connectors are engaged with and fixed to each other by interposing engagement means that the optical fiber connectors relatively move up and down, and the both knobs include the engagement means. The front plate, the left and right side plates protruding at right angles from the left and right ends of the front plate at a predetermined interval by bending the spring plate in a state where the opposing walls are in contact with each other, and the ends of the both side plates Fold each part forward inward Characterized in that it is one that is secured by fasteners formed by the two pair of locking plate obliquely projected.
[0007]
Further, in the present invention, the fitting means includes an elongated hole provided in the longitudinal direction of the housing on the top wall and the bottom wall of each housing, and a laterally elongated hole provided on the opening side perpendicular to the elongated hole. And a T-shaped projection consisting of a projection corresponding to each T-shaped hole and a laterally elongated projection on the inner surface of the top and bottom walls of each knob. The protrusion is provided with a width that is narrower by a predetermined dimension than that of the elongated hole so that the protrusions can be relatively moved laterally .
[0008]
Further, according to a third aspect of the present invention, the engaging means includes an ant tenon vertically formed on one of the opposing walls of the pair of knobs and an ant hole vertically formed on the other, and the ant tenon and the ant hole are relatively It is characterized in that it is engaged with it so as to be movable up and down .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of an adapter for an optical fiber connector according to the present invention will be described with reference to the drawings.
1 shows a perspective view in which the adapter is partially cut away, FIG. 2 shows a perspective view in a state in which the adapter is divided into left and right parts, and FIG. 3 shows a longitudinal plan view in a state in which the adapter is cut up and down from the center. FIG. 4 is a perspective view of a state where two pairs of optical fiber connectors are fitted and fixed to the adapter, and FIG. 4 shows an enlarged cross-sectional view taken along line AA in FIG. 4 in a state of moving opposite to FIG. 6, and FIG. 6 shows a state in which two pairs of optical fiber connectors are fitted and fixed to the adapter and moved symmetrically outward. FIG. 7 shows an enlarged cross-sectional view, FIG. 7 shows a vertical plan view of a state where two pairs of optical fiber connectors are fitted to the adapter, and is cut up and down from the center, and FIG. 8 is a BB line in FIG. FIG. 9 is a cross-sectional view taken along the arrow, and FIG. Driver connector shows a perspective view of a state where the joining.
[0011]
The adapter of the optical fiber connector according to the present invention includes a pair of housings 1 and 2 divided into two from the center and left and right, as shown in FIGS. 1 and 2, and FIGS. It is composed of two pairs of knobs 3 and 4 divided into left and right.
[0012]
The pair of housings 1 and 2 are configured as follows.
As shown in FIG. 1 to FIG. 7, it is divided into right and left from the center, and the joints 6 and 7 to the receptacle 5 shown in FIG. 9 are at one end, and the insertion parts 10 and 11 of the optical plugs 8 and 9 are at the other end. Each is formed. Each of the joint portions 6 and 7 is formed in a square tube shape, and each of the optical plug insertion portions 10 and 11 has one of a top wall 10a and 11a, an outer wall 10b and 11b, and a bottom wall 10c and 11c. The opposite portions are formed in the openings 10d and 11d, respectively, by forming each in a substantially U-shaped cross section and the other in a substantially inverted U-shaped cross section.
[0013]
The two pairs of knobs 3 and 4 are configured as follows.
As shown in FIGS. 1, 2, 5, 6, and 8, the top walls 3 a, 4 a, the opposing walls 3 b, 4 b, and the bottom walls 3 c, 4 c have one of a substantially reverse cross section. The other is formed in a substantially U-shape in cross section, and on each surface of the top walls 3a, 4a and the bottom walls 3c, 4c are formed anti-slip 3d, 4d made of a plurality of recesses and ridges. I'm allowed.
[0014]
That is, the pair of knobs 3 and 4 are pushed in from the side of the openings 10d and 11d opened facing the optical plug insertion sections 10 and 11 in the pair of housings 1 and 2, respectively. On the other hand, the pair of housings 1 and 2 are fitted and packaged with fitting means 12 and 13 that move in the left-right direction (perpendicular to the length direction of the housings 1 and 2).
[0015]
The fitting means 12 and 13 are configured as follows.
As shown in FIGS. 1 to 3, 5, and 6, the housings 1 are provided on the top walls 10 a and 11 a and the bottom walls 10 c and 11 c of the optical plug insertion portions 10 and 11 in the pair of housings 1 and 2. T-shaped holes with long holes 12b and 13b provided in the length direction of 2 and horizontally long holes 12c and 13c provided long from the middle part of the long holes 12b and 13b to the openings 10d and 11d described above 12a, 13a, on the other hand, on the inner surfaces of the top walls 3a, 4a and the bottom walls 3d, 4d of the knobs 3, 4, projections 12e, 13e provided long in the length direction of the housings 1, 2; T-shaped protrusions 12d and 13d made of horizontally long protrusions 12f and 13f are formed corresponding to the T-shaped holes 12a and 13a, and as described above, the knobs 3 and 4 are connected to the optical plug insertion portions. 10 and 11, the openings 10d and 11d By fitting pushing from each T-shaped holes 12a, each of T-shaped projections 12d to 13a, it is allowed to form to 13d is fitted.
[0016]
The fitting means 12, 13 has a large lateral width L of the long holes 12b, 13b of the T-shaped holes 12a, 13a, and a small lateral width l of the long projections 12e, 13e of the T-shaped protrusions 12d, 13d. As a result, gaps 12g and 13g having a predetermined width are formed in the left-right direction between the long holes 12b and 13b and the long protrusions 12e and 13e, and each knob is formed by the width of the gaps 12g and 13g. A pair of housings 1 and 2 are formed so as to be moved in the left-right direction with respect to 3 and 4.
[0017]
Further, the knobs 3 and 4 are formed to have substantially the same length as the optical plug insertion portions 10 and 11 of the housings 1 and 2, and the housings 1 and 2 of the facing walls 3b and 4b. The width in the longitudinal direction is approximately ½ of the length of the knobs 3 and 4 and is formed on the side of the joints 6 and 7 of the housings 1 and 2.
[0018]
As shown in FIGS. 1 and 2, the two pairs of knobs 3 and 4 are engaged and fixed by the engaging means 14 and 15 so as to be movable in the vertical direction. Is constructed as follows.
As shown in FIGS. 1 to 3, the opposing walls 3b and 4b of the pair of knobs 3 and 4 are formed to be thick, the ant tenon 14a is formed on the surface of one opposing wall 3b, and the other opposing wall is provided. A range of effective lengths of the ant tenon 14a and the ant hole 14b in the vertical direction by inserting the ant tenon 14a and the ant hole 14b from above and below in the vertical direction corresponding to the ant holes 14b on the surface of 4b. The knobs 3 and 4 are configured to be fixed so as to be movable in the vertical direction and without moving in the horizontal direction.
[0019]
Further, the opposing walls 3b and 4b are fixed by the fixing tool 15 as shown in FIGS. 1 and 3 in a state where the opposing surfaces abut each other.
[0020]
The fixture 15 is configured as follows.
As clearly shown in FIG. 3, the front plate 15a, left and right side plates 15b and 15b projecting at right angles from the left and right ends of the front plate 15a to the rear (rightward in FIG. 3) at a predetermined interval, and the both side plates 15b and 15b are formed with two narrow pairs of locking plates 15c and 15c that are inclined and projecting inward and forward, and the fixture 15 is formed by bending a spring plate. It is integrally formed.
[0021]
Then, after fixing the pair of knobs 3 and 4 to each other, the fixture 15 has an arrow n from between the joints 6 and 7 in the pair of housings 1 and 2 as shown by a two-dot chain line in FIG. The inclined surfaces of the locking plates 15c, 15c abut against the front end portions of the opposing walls 3b, 4b, and the left and right side plates 15b, 15b resist the spring force of themselves. The fixing tool 15 is pushed rearward (rightward in FIG. 3), and the both locking plates 15c, 15c are disengaged from the inner surfaces of the opposing walls 3b, 4b, and at the same time, the left and right side plates 15b, 15b. Returns to the opposite side, and fixes both the opposing walls 3b, 4b in a butted state, and the ends of the pair of locking plates 15c, 15c are locked to the ends of the opposing walls 3b, 4b. The omission of is surely prevented.
[0022]
The two individual optical fiber connectors 16 and 17 are configured as follows.
As shown in FIGS. 7 and 8, the plug frames 18, 19 at one end (the left end in FIGS. 7 and 8) of the joints 6, 7 to the receptacle 5 in the two pairs of housings 1, 2 described above. And the stop rings 20 and 21 are engaged and fixed in the plug frames 18 and 19, and the optical fibers 22 and 23 are inserted and fixed in the plug frames 18 and 19 and the stop rings 20 and 21, respectively. The ferrules 24 and 25 and their holders 26 and 27 are arranged with springs 28 and 29 interposed between the holders 26 and 27 and the stop rings 20 and 21 and the tips of the ferrules 24 and 25 projecting outward. Keplers (not shown) of the optical fiber cords 30 and 31 are fixed to the outer periphery of the rear portions of the rings 20 and 21 by caulking rings 32 and 33, and the caulking The coatings 30a and 31a from which the optical fiber cords 30 and 31 are peeled off are fixed to the outer periphery of the rear portions of the rings 32 and 33 by other caulking rings 34 and 35, and the optical fiber cords 30 and 31 and the caulking rings 32 and 33 are fixed. 34 and 35 are formed by covering them with rubber or synthetic resin boots 36 and 37 whose one ends are locked and fixed to the stop rings 20 and 21.
[0023]
【The invention's effect】
Since the present invention is configured as described above, according to the first aspect, the two pairs of housings divided into two, the fitting means for fitting and fixing the two pairs of knobs, and two With the engaging means for engaging and fixing the pair of knobs, the two individual optical fiber connectors can be moved in the biaxial direction in a parallel state, and in the vertical direction, the effective range of the vertical movement of the engaging means is In the interior, the movement range is extremely large, so it is possible to cope with a large displacement of the receptacle and it is not forced to join. Excellent stability. Also, the housing and the knob need only be pushed in, and the pair of knobs can be easily assembled by simply inserting them from above or below, and they are simple in structure and are inexpensive to manufacture. be able to. Furthermore, since the pair of knobs (a pair of optical fiber connectors) can be moved up and down and firmly with a fixture, the reliability and stability at the time of joining can be further improved.
[0025]
Furthermore, according to the second aspect , each housing and the knob can be easily fitted and assembled so as to be laterally movable simply by pressing each housing and the knob against each other.
[0026]
Further, according to claim 3 , by simply engaging the dovetail and the dovetail hole, it is possible to easily and easily assemble the pair of two optical fiber connectors and to move the dovetail and the dovetail together. The range of vertical movement of the pair of optical fiber connectors can be greatly increased within the range of the length from the hole.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a part of an adapter of an optical fiber connector according to the present invention.
FIG. 2 is a perspective view showing the adapter separated into two parts.
FIG. 3 is a longitudinal plan view showing the adapter same as above cut from the center up and down.
FIG. 4 is a perspective view showing a state in which two pairs of optical fiber connectors are housed in the adapter.
5 is a cross-sectional view taken along line AA in FIG. 4 in a state where a pair of housings are opposed to each other inward.
6 is a transverse cross-sectional view showing a state in which a pair of housings are moved symmetrically outward as in the case of FIG.
FIG. 7 is a longitudinal plan view showing a state in which a pair of optical fiber connectors are housed in a pair of housings by cutting up and down from the center.
8 is a cross-sectional view taken along line BB in FIG.
FIG. 9 is a perspective view showing a state in which two optical fiber connectors are internally fixed to the adapter and joined to the receptacle.
FIG. 10 is a perspective view showing an adapter of a conventional optical fiber connector.
FIG. 11 is a plan view showing another conventional optical fiber connector adapter.
12 is a cross-sectional view taken along the line CC in FIG.
[Explanation of symbols]
1, 2 Two pairs of housings 3, 4 Two pairs of knobs 3b, 4b Opposing walls 10, 11 Optical plug insertion portions 10d, 11d of the housings 12, 13 Fitting means 14 Engaging means 15 Fixing tool 16 , 17 Two pairs of optical fiber connectors

Claims (3)

A pair of two housings divided into left and right sides for fitting two individual optical fiber connectors are formed, and an opposing portion on the optical plug insertion portion side in each housing is formed in each opening. And a pair of two knobs formed on the opposite side of the housing, and fitted to each housing through a fitting means for moving in a direction perpendicular to the longitudinal direction of each housing. The both knobs are engaged and fixed via an engaging means that relatively moves up and down, and the two springs have a spring plate in a state of abutting the opposing walls provided with the engaging means. The front plate, the left and right side plates projecting at right angles from the left and right ends of the front plate at a predetermined interval by bending, and the end portions of the both side plates are folded back to the inner front and inclined. Formed with a pair of locking plates Optical fiber connector adapter, characterized in that those are fixed by the fixing member. The fitting means includes a T-shaped hole formed on a top wall and a bottom wall of each housing, which includes a long hole provided in the length direction of the housing, and a horizontal long hole provided on the opening side at a right angle to the long hole. The inner surface of each knob is formed with a T-shaped projection composed of a projection corresponding to each T-shaped hole and a laterally elongated projection, and the elongated hole and the projection are relatively laterally movable. 2. The adapter for an optical fiber connector according to claim 1, wherein a width of the protrusion is narrower by a predetermined dimension than that of the elongated hole so as to be fitted to the adapter. The engaging means comprises an ant tenon vertically provided on one of the opposing walls of the pair of knobs and an ant hole vertically provided on the other, and is engaged with the ant tenon and the ant hole so as to be relatively movable up and down. The adapter for an optical fiber connector according to claim 1, wherein the adapter is an optical fiber connector.

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